Adjustable lamp



FIG. 1 is a perspective right side view of an adjustable lamp showing my new design;

FIG. 2 is a perspective right side view thereof adjusted to a different position;

FIG. 3 is a right side view of the adjustable lamp as shown in FIG. 1;

FIG. 4 is a left side view thereof;

FIG. 5 is a front view thereof;

FIG. 6 is a rear view thereof; and,

FIG. 7 is a top plan view thereof. 

The ornamental design for an adjustable lamp, substantially as shown. 